| | Key Features��mart double CPU control 
 ��Low frequency Line interactive design
 ��Pure sine wave output THD less than 3%
 
 ��Automatic self-detection on startup
 
 ��Adjustable output voltage
 
 ��Unattended management function
 
 ��Manual silence/alarm transfer function
 
 ��LED display for load and battery rate, Line or battery mode and fault
 
 ��AVR function
 
 ��Provide lightning, surge, and overload and short-circuit protection.
 
 ��Cold start function (DC power on).
 
 ��Auto transfer, the typical transfer time 5Ms.
 
 ��With Rs232 and software
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 Technical Specifications
 
 | Model | LISW1K(S) | LISW2K(S) | LISW3K(S) | LISW4KS |  | Maximum Output Power(W) | 1000VA | 2000VA | 3000VA | 4000VA |  | 600W | 1200W | 1800W | 2400W |  | Input  | Voltage | 140-280V or 70-140V ��5V |  | Frequency | 45~65Hz |  | Output | Voltage | 220Vac��10% or 110Vac��10% |  | Frequency | 50/60��0.5HZ |  | Output Waveform | sine wave |  | General Protection | Output Short; Over Voltage; Low-Voltage; Power Utility Short; Low Battery Voltage  |  | DC voltage | 24VDC | 48VDC | 48VDC | 48VDC |  | Charge Current  | 1K-4K | Max 3Amp |  | 1KS-4KS | Max 15AMP |  | Battery | Battery Type | Valve controlled maintenance free sealed lead-acid battery |  | 1K-4K | 2*12VDC/7AH | 4*12VDC/7AH | 4*12VDC/9AH | 4*12VDC/9AH |  | 1KS-4KS | 24VDC External  | 48VDCExternal  | 48VDC External  | 48VDC External  |  | Transfer Time(ms) | Typical 4MS,Max 10MS |  | Overload Protection | 120%-150% load, hold 10 seconds,150% load hold 1 second |  | Alarm | when mains input off,UPS beeping 4 times every one minutes, when battery low,UPS beeping once every second |  | Communication Interface | RS-232 and communication software, , , |  | Surge protection | yes |  | LED Display  | Line,Battery,Fault,Battery Rate, Load Rate |  | LCD Display | �� | Input Voltage, Output Voltage, Frequency, Bat Voltage, Load Rate |  | Product size | W*D*H (mm) | 405*145*220 | 460*192*340 | 460*192*340 | 460*192*340 |  | Package size | W*D*H (mm) | 501*488*350/2PCS | 595*335*495 | 595*335*495 | 595*335*495 |  | Packing Weight (Standard /Long time) (KG) | 29/22 (2PCS) | 34/24 | 37/27 | 38/28 |  | REMARK | LISW*K --- Standard Type, LISW*KS---- Long Time Type. LCD Display optional | 
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